The SCHIZOID gene regulates differentiation and cell division in Arabidopsis thaliana shoots
| Autor: | Ronald L. Parsons, June I. Medford, Friedrich J. Behringer |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Cell division
Cellular differentiation fungi Mutant Arabidopsis food and beverages Cell Differentiation Plant Science Biology Meristem Genes Plant biology.organism_classification Plant Leaves Phenotype Gene Expression Regulation Plant Callus Mutation Shoot Botany Genetics Arabidopsis thaliana Cell Division Plant Shoots Vascular tissue |
| Zdroj: | Planta. 211:34-42 |
| ISSN: | 1432-2048 0032-0935 |
| Popis: | Cell division and cell differentiation are key processes in shoot development. The Arabidopsis thaliana (L.) Heynh. SCHIZOID (SHZ) gene appears to influence cell differentiation and cell division in the shoot. The shz-2 mutant is notable in that distinct phenotypes develop, depending on the environment in which the plants are grown. When shz-2 mutants are grown in petri dishes, callus develops from the petiole and hypocotyl. In contrast, when the mutants are grown on soil, shoots appear externally stunted with malformed leaves. However, detailed examination of soil-grown mutants shows that the two phenotypes are related. Soil-grown mutants form adventitious meristems, produce a large amount of vascular tissues and have aberrant cell divisions in the meristem. Cells with abnormal cell-division patterns were found in the apical and vascular meristems, suggesting SHZ influences cell division. Development of callus in petri dishes, development of adventitious meristems and aberrations in leaves on soil suggest that SHZ influences cell differentiation. The distinct, but related phenotypes on soil and in petri dishes suggests that SHZ normally functions to regulate differentiation and/or cell division in a manner that is responsive to environmental conditions. |
| Databáze: | OpenAIRE |
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